Human galectin 3 binding protein interacts with recombinant adeno-associated virus type 6.

Journal Article (Journal Article)

Recombinant adeno-associated viruses (rAAVs) hold enormous potential for human gene therapy. Despite the well-established safety and efficacy of rAAVs for in vivo gene transfer, there is still little information concerning the fate of vectors in blood following systemic delivery. We screened for serum proteins interacting with different AAV serotypes in humans, macaques, dogs, and mice. We report that serotypes rAAV-1, -5, and -6 but not serotypes rAAV-2, -7, -8, -9, and -10 interact in human sera with galectin 3 binding protein (hu-G3BP), a soluble scavenger receptor. Among the three serotypes, rAAV-6 has the most important capacities for binding to G3BP. rAAV-6 also bound G3BP in dog sera but not in macaque and mouse sera. In mice, rAAV-6 interacted with another protein of the innate immune system, C-reactive protein (CRP). Furthermore, interaction of hu-G3BP with rAAV-6 led to the formation of aggregates and hampered transduction when the two were codelivered into the mouse. Based on these data, we propose that species-specific interactions of AAVs with blood proteins may differentially impact vector distribution and efficacy in different animal models.

Full Text

Duke Authors

Cited Authors

  • Denard, J; Beley, C; Kotin, R; Lai-Kuen, R; Blot, S; Leh, H; Asokan, A; Samulski, RJ; Moullier, P; Voit, T; Garcia, L; Svinartchouk, F

Published Date

  • June 2012

Published In

Volume / Issue

  • 86 / 12

Start / End Page

  • 6620 - 6631

PubMed ID

  • 22496229

Pubmed Central ID

  • PMC3393578

Electronic International Standard Serial Number (EISSN)

  • 1098-5514

Digital Object Identifier (DOI)

  • 10.1128/JVI.00297-12


  • eng

Conference Location

  • United States